Pushing...err changing website buttons?

Re-vamping the website - I'd like to change the words on the buttons - does anyone know how to do that? I'd love to use this flat spiral - such a great one - you can see where I started to wind the glass and where I took a breather then where I ended - love the texture! Would make a great button....now, if I can only figure out how? Let me know if you've got any ideas!